update.php

<?php
require("koneksi.php");

$response = array();

if($_SERVER["REQUEST_METHOD"] == "POST"){
    $id = $_POST["id"];
    $nama = $_POST["nama"];
    $alamat = $_POST["alamat"];
    $telepon = $_POST["telepon"];

    $perintah = "UPDATE tblrumahsakitpalembang SET nama='$nama', alamat='$alamat', telepon='$telepon' WHERE id='$id'";
    $eksekusi = mysqli_query($konek, $perintah);
    $cek = mysqli_affected_rows($konek);

    if($cek > 0){
        $response["kode"] = 1;
        $response["pesan"] = "Sukses Mengubah Data";
    }
    else{
        $response["kode"] = 0;
        $response["pesan"] = "Gagal Mengubah Data";
    }

}
else{
    $response["kode"] = 0;
    $response["pesan"] = "Tidak ada Post Data";
}

echo json_encode($response);
mysqli_close($konek);